Where does “Мельничук” come from?

Мельничук (Ukrainian) comes from Ukrainian -у́к, from Proto-Slavic *-ukъ.

Ancestry of “Мельничук”, step by step

StepLanguageWordMeaning
1Ukrainian-у́кAdded to an often diminutive stem to form a patronymic or matronymic surname
2Proto-Slavic*-ukъ

Words derived from “Мельничук

Every word from Proto-Slavic *-ukъEvery word from Ukrainian -у́к